Mixer/aerator with flat vanes



FIG. 1 is a front elevation view of a mixer/aerator showing our new design; the left, right, and rear elevation views of the design are identical; and,

FIG. 2 is a plan view thereof; the bottom view of the design is identical.

The portions of the mixer/aerator with flat vanes shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a mixer/aerator with flat vanes, as shown and described. 